HAWTHORNE, Calif.--(BUSINESS WIRE)--OSI Systems, Inc. (NASDAQ:OSIS) today announced that its security division, Rapiscan Systems, has received a contract valued at approximately $27 million to provide multiple units of the RTT® 110 (Real Time Tomography) explosives detection system (EDS) to Leonardo da Vinci – Fiumicino Airport. The RTT’s unique design enables baggage to be screened at high speed, allowing the RTT to be installed “in-line” within an airport’s existing baggage handling network w